Cuénot, Lucien (1940), "Remarques sur un essai d'arbre généalogique du règne animal", Comptes Rendus de l'Académie des Sciences de Paris210: 23–27. Available free online at http://gallica.bnf.fr (No direct URL). This is the paper credited by Hennig 1979 for the first use of the term 'clade'.

Mayr, Ernst (1976), Evolution and the diversity of life (Selected essays), Cambridge, MA: Harvard University Press, ISBN0-674-27105-X Reissued 1997 in paperback. Includes a reprint of Mayr's 1974 anti-cladistics paper at pp. 433–476, "Cladistic analysis or cladistic classification." This is the paper to which Hennig 1975 is a response.

Mayr, Ernst (1978), "Origin and history of some terms in systematic and evolutionary biology", Systematic Zoology27 (1): 83–88, doi:10.2307/2412818, JSTOR2412818.